When someone smokes cigarettes and drinks three alcoholic beverages a day, he or she is contributing to his or her cancer risk via <span>promotion.
Researchers have discovered that the combination of tobacco and alcohol increases the risk of cancer in </span>throat, oral cavity, esophagus and <span>larynx.
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Hydrolysis is when a polymer (such as a peptide bond or fatty acid) is split into smaller segments by adding water.
The answer is false.
The two main nuclear processes are nuclear fission and nuclear fusion.
In fission, a large nucleus is bombarded with a high energy neutron, resulting in the breakdown of the nucleus and the release of two smaller nuclei along with neutrons and high amounts of energy.
In nuclear fusion on the other hand, two smaller atomic nuclei possessing high amounts of energy to form a larger nucleus, with the possible release of neutrons. This process is also highly exothermic.
Answer:
Pet keeping wasn't generally accepted in Europe until the end of the 17th century, and it wasn't common among the middle classes until the late 18th century. Pet keeping in its present form is probably a 19th century Victorian invention. At this time, it was perceived as a link with the natural world, which itself was no longer seen as threatening. It also allowed a visible demonstration of man's domination over nature.
In present-day societies, dogs have a number of functional roles, from ornamental to status symbol, as helpers, and as companions. Dogs can also act as a channel for personal expression because people express their personality in the breed they own. For example, rare breeds are often used as indicators of status. Guide dogs for blind people and hearing dogs for deaf people are examples of pets who are kept as helpers.
But the most common reason for owning pets in Western societies is companionship. In recent years, there's been a growing awareness of the very positive effects this relationship can have on human health and psychological well-being, and a recognition of the therapeutic value of companion animals.
The correct answer is the mouth. Digestion begins when food enters the mouth, chewed, and mixed with saliva. Food usually has complex carbohydrates such as starch in them and saliva has an enzyme called salivary amylase which can break down these complex carbohydrates into simpler molecules (i.e. dextrins). After which, these dextrins are digested further in the stomach and in the small intestine by the action of enzymes such as the pancreatic amylase which further breaks down dextrins into oligosaccharides and disaccharides. Other enzymes such as trypsin breaks down proteins into amino acids and lipase that breaks down fat into triglycerides. In the brush border of the small intestine, there are enzymes such as oligosaccharidases and disaccharidases which breaks down sugars into their most basic forms (i.e. glucose, fructose, galactose) which can be readily absorbed in the intestine. Amino acids and tricglycerides are also readilty absorbed in the intestines with the latter by the help of emulsification by bile.
